Polyatomic Ions

Front

What is a polyatomic ion?

Back

A polyatomic ion is a charged species (ion) composed of two or more atoms covalently bonded, which can be considered as a single unit.

Front

What is the charge of the chromate ion (CrO₄²–)?

Back

The chromate ion has a charge of 2–.

Front

What is the formula for the nitrate ion?

Back

The formula for the nitrate ion is NO₃–.

Front

What is the name of the ion with the formula OH–?

Back

The ion with the formula OH– is called hydroxide.

Front

What is the formula for the cyanide ion?

Back

The formula for the cyanide ion is CN–.

Front

What is the correct name for ClO₃–?

Back

ClO₃– is called chlorate.

Front

What is the difference between nitrite and nitrate ions?

Back

Nitrite has the formula NO₂– and nitrate has the formula NO₃–; nitrate has one more oxygen atom than nitrite.

Front

What is the charge of the sulfate ion (SO₄²–)?

Back

The sulfate ion has a charge of 2–.

Front

What is the formula for the bicarbonate ion?

Back

The formula for the bicarbonate ion is HCO₃–.

Front

What is the name of the ion with the formula PO₄³–?

Back

The ion with the formula PO₄³– is called phosphate.